#33541999 33c NATO
$0.20- $25.00 #10081952 3¢ NATO
$0.20- $36.50 #11271959 4¢ Nato
$0.20- $25.00 #27551993 29c Dean Acheson
$0.25- $69.50 #UC491974 18c Air Post Envelope, red & blue NATO emblem
$1.75- $3.20 #C1181988 45c Samuel P. Langley Airmail
$0.30- $85.00 #11511960 4c SEATO
$0.20- $20.00 #7321933 3c National Recovery Act
$0.20- $65.00